Edmund Patrick Cahill, better known professionally as Eddie Cahill, has built a screen career across sitcoms, sports films, crime dramas and contemporary cinema. Many viewers first noticed him as Tag Jones on Friends, while others know him as Detective Don Flack on CSI: NY. He also portrayed U.S. Olympic goaltender Jim Craig in Miracle and appeared as Robert in Celine Song’s Materialists.
What makes his career notable is its range and staying power. Cahill moved from theatre and guest television work into a recurring role on one of the world’s best-known sitcoms, then into a major sports film and a nine-season crime series. His later credits show that he continued working beyond the characters that first made him familiar.
Quick Bio
| Detail | Information |
|---|---|
| Full name | Edmund Patrick Cahill |
| Professional name | Eddie Cahill |
| Born | January 15, 1978 |
| Birthplace | New York City, New York, U.S. |
| Profession | Actor |
| Known for | Friends, Miracle, CSI: NY, Under the Dome, Conviction |
| Education | Skidmore College; Atlantic Theater Acting School |
| Years active | 2000–present |
Public biographical records identify Edmund Patrick Cahill as a New York-born American actor who studied at Skidmore College and the Atlantic Theater Acting School, associated with NYU’s Tisch School of the Arts. His professional screen career began around 2000, after theatre work, and quickly expanded into television and film.
Who Is Edmund Patrick Cahill?
Edmund Patrick Cahill is an American actor best known for Tag Jones on Friends, Jim Craig in Miracle and Detective Don Flack on CSI: NY. Those roles span three very different forms of screen storytelling: sitcom romance, historical sports drama and procedural crime television.
Born in New York City on January 15, 1978, Cahill did not begin with an immediate blockbuster role. His early credits included appearances in Sex and the City, Felicity and Law & Order: Special Victims Unit, while his theatre background included an Off-Broadway appearance in The Altruists.
The Friends Breakthrough
For Edmund Patrick Cahill, Friends was a major early turning point. He played Tag Jones, Rachel Green’s assistant and boyfriend, during the sitcom’s later seasons. The part was recurring rather than central, but its reach was enormous.
Tag was also a useful contrast to the more serious characters Cahill would later play. The role required him to work within a fast-moving comedy built around characters audiences already knew extremely well. His supporting performance became one of the credits most closely associated with his early career.
From Glory Days to Miracle
After his early television work, Cahill took the lead role of Mike Dolan in Glory Days, a WB drama that premiered in 2002. Although the series had a short run, it marked a move toward larger television responsibilities.
His next major milestone was Miracle, the 2004 Disney film about the U.S. men’s hockey team’s 1980 Olympic victory. Cahill played goaltender Jim Craig, one of the real athletes at the centre of the story.
The production needed authentic hockey action. Former NHL goaltender Bill Ranford served as Cahill’s goalie double for much of the demanding on-ice work, while Cahill handled the character performance away from those sequences. Contemporary accounts of the production describe Ranford performing the masked hockey action for the role.
CSI: NY Became His Signature Role
If Friends introduced Edmund Patrick Cahill to a huge sitcom audience, CSI: NY gave him the role most closely associated with his long-term television career. Edmund Patrick Cahill joined the CBS procedural as Detective Don Flack in 2004 and remained with the series until its 2013 finale.
Flack was a New York homicide detective who worked alongside the show’s forensic investigators. The character was tougher and more serious than Tag Jones, allowing Cahill to establish a different screen identity.
CSI: NY ran for nine seasons and 197 episodes, with Cahill appearing in all 197. Paramount Global Content lists him as Don Flack and confirms the show’s nine-season, 197-episode run.
The length of the series mattered. Nearly a decade with one character gave Cahill time to develop Flack beyond a simple supporting detective. For many viewers, that became his defining television role.
Life and Work After CSI: NY
The end of CSI: NY did not end Cahill’s television career. He moved into other genres, playing Sam Verdreaux in Under the Dome and Conner Wallace in Conviction. His later credits include appearances in NCIS: New Orleans, Hawaii Five-0, L.A.’s Finest, Fantasy Island and Blue Bloods.
His film work also continued. These credits connect his recent work with his earlier television career. His credits include Lords of Dogtown, The Narrows and Omni Loop, showing a pattern of moving between television and independent or feature-film projects rather than relying entirely on one franchise.
His recent screen credits also include Omni Loop in 2024 and a 2023 appearance on Blue Bloods. Available filmography records show he continued working across both television and film.
Materialists and His Recent Career
One of Cahill’s more recent film appearances is Materialists, written and directed by Celine Song. The 2025 film stars Dakota Johnson, Chris Evans and Pedro Pascal, with Cahill playing Robert. A24 lists Cahill among the cast of the 2025 release.
His recent screen work also shows a continued connection to ensemble filmmaking. Rather than depending on one franchise, Cahill has continued appearing alongside established casts in television and film.
There is no reliable basis for predicting his next major project unless it has been officially announced. For now, the clearest evidence of his current career comes from projects that have already been released.
Personal Life and Acting Background
Information about Edmund Patrick Cahill’s professional background is much better documented than his private life. Public records consistently identify his birth date, birthplace and acting education, while his early theatre work provides useful context for his screen career.
His theatre training is particularly relevant. Before becoming widely known on television, Cahill appeared Off-Broadway in The Altruists. That experience helped establish a performance foundation before Friends and CSI: NY made him familiar to much larger audiences.
Details about relationships, finances and other private matters are less consistently documented by authoritative sources. Rather than treating unverified celebrity-profile claims as fact, it is more accurate to focus on the public record of his work.
Why His Career Has Lasted
The most useful way to understand Edmund Patrick Cahill is to look at the progression of his roles. Friends created early visibility; Miracle expanded his film profile; CSI: NY gave him a signature character; and later projects allowed him to keep working outside that identity.
His career also illustrates a less headline-driven form of acting success. Long-running television, recurring parts and supporting film roles may not generate constant celebrity news, but they can create a durable professional résumé.
Conclusion
Edmund Patrick Cahill has built a career around progression rather than one defining moment. Friends introduced him to a huge television audience, Miracle connected him to a major historical sports film, and CSI: NY gave him nearly a decade to develop Don Flack into a recognisable television character.
His later work in Under the Dome, Conviction, Blue Bloods, Omni Loop and Materialists shows that his career continued beyond that signature role. That consistency is perhaps his most important professional achievement. For viewers discovering Edmund Patrick Cahill through a recent film or revisiting him from Friends, his wider career reveals an actor whose work has remained varied, steady and relevant across more than two decades.
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(FAQs)
Who is Edmund Patrick Cahill?
Edmund Patrick Cahill is an American actor professionally known as Eddie Cahill. He is best known for Tag Jones on Friends, Jim Craig in Miracle and Detective Don Flack on CSI: NY.
How old is Edmund Patrick Cahill?
Edmund Patrick Cahill was born on January 15, 1978, in New York City. He is 48 years old in 2026.
What is Edmund Patrick Cahill best known for?
Edmund Patrick Cahill is particularly known for playing Tag Jones on Friends and Don Flack on CSI: NY. He also portrayed Olympic goaltender Jim Craig in Miracle.
Was Edmund Patrick Cahill in Friends?
Yes. Edmund Patrick Cahill played Tag Jones, Rachel Green’s assistant and boyfriend, in the later seasons of Friends. The recurring role helped increase his visibility early in his television career.
What did Edmund Patrick Cahill play in Materialists?
In Materialists, Edmund Patrick Cahill plays Robert. The 2025 film was written and directed by Celine Song and stars Dakota Johnson, Chris Evans and Pedro Pascal.
Is Edmund Patrick Cahill still acting?
Yes. Edmund Patrick Cahill has continued appearing in film and television. Recent credits include Omni Loop in 2024 and Materialists in 2025, following later television work including Blue Bloods.
